This question was actually answered in a thread I started, so I'll post DocJohn's reply here:

You have to replace the whole MAIN subroutine. Go to http://www.grohol.com/downloads/oj/latest/oj.txt and you can get it there.

Somehow posting the script here gets botched up, so if you use that link you'll find the text version. But basically you have to replace the "sub main" section which is near the beginning, starting with this:

# ----------------------------------------------
# Main
# ----------------------------------------------

You can see the rest of the discussion in the thread called "Add New User" by kalico.

Marci